Real-time processing status display device

Abstract

The present invention aims to provide a real-time machining state display device that maps the state of a machining tool at the tip of a machine tool along its machining path. [Solution] This real-time machining status display device includes: a measurement means for monitoring at least one or more physical quantity data of the machining tool, such as temperature, acceleration, or stress, in a time series; a position acquisition means for reading the time series coordinates of the machining tool in operation from the time information and position information of the machine tool's motion control means (CNC); and a mapping means for converting the physical quantity data at coordinates on the machining path into visualization data and displaying it at the position on the machining path, based on the time series physical quantity data from the sensor and the time series coordinate data from the position acquisition means.

Description

Technical Field

[0001] The present invention relates to a real-time machining state display device capable of visualizing in real time physical changes such as temperature and acceleration at the machining position of tools and the like of a machine tool.

Background Art

[0002] In machine tools such as machining cutting devices, in consideration of improving machining accuracy and preventing tool breakage, it is required to evaluate tool wear, fatigue, breakage, "chatter", etc. during actual machining. However, conventionally, the evaluation of tools has been carried out by device manufacturers and tool manufacturers for each of their devices and tools, and has remained based on general evaluation criteria and academically standardized evaluation criteria, and real-time verification of actual tools during machining has not been possible.

[0003] In contrast, the applicant has developed and provided a tool holder unit of a machine tool capable of measuring the temperature and acceleration during machining of a rotary tool, and has also developed and provided an abnormality prediction technology such as tool breakage based on this measurement result (Patent Documents 1 to 3). This technology is advantageous in that physical changes of tools and the like during machining can be detected in real time, and abnormality detection can be performed by an external device (such as a personal computer) capable of wireless communication with the tool and the machine tool. For example, it is also possible to monitor acceleration in ball end mill machining and detect the occurrence of so-called "chatter" where machining accuracy is likely to deteriorate.

[0004] However, conventionally, the detected changes in tool temperature, acceleration, etc., are time-series data, and even if an anomaly is detected, it is difficult to determine the exact location of the anomaly during machining. For example, as mentioned above, even if acceleration is measured and monitored during ball end mill machining, and it is determined that chatter is occurring because the acceleration exceeds a threshold, it is difficult to immediately determine the exact location of the chatter during machining. This makes it difficult to pinpoint the location of chatter in the workpiece when machining complex shapes. This is considered to be an obstacle to the widespread use of real-time measurement data of tool temperature, acceleration, etc., in general machining sites and to the provision of a society where high-precision machining is guaranteed. [Prior art documents] [Patent Documents]

[0005] [Patent Document 1] International Public Publication WO2015-022967 [Patent Document 2] International Public Publication WO2016-136919 [Patent Document 3] Japanese Patent Publication No. 2018-54611 [Overview of the Initiative] [Problems that the invention aims to solve]

[0006] This invention was created in view of the above circumstances, and aims to provide a real-time machining status display device that displays physical changes such as temperature and acceleration in machining tools such as machine tool tools, simultaneously with the three-dimensional position of machining, and visualizes the situation occurring at the actual machining position in real time. [Means for solving the problem]

[0007] To achieve the above objective, the real-time processing status display device of the present invention specifically provides: A real-time machining status display device that maps the state of the machining tool at the tip of a machine tool along the machining path, A measurement means for monitoring at least one or more physical quantity data of the processing tool, such as temperature, acceleration, or stress, in a time series, A position acquisition means that reads the time-series coordinates of a machining tool in operation from the time information and position information of the motion control means (CNC) of a machine tool, The system includes a mapping means that, based on time-series physical quantity data from the measurement means and time-series coordinate data from the position acquisition means, converts the physical quantity data at coordinates on the machining path into visualization data and displays it at the position on the machining path.

[0008] The real-time machining status display device of the present invention allows for the mapping and visualization of changes in temperature, acceleration, and stress of a machining tool used in a machine tool on the machining path. Specifically, it monitors the temperature, acceleration, and stress of the machining tool in real time, converts the time-series output measurement data into display data on the position / time axis of the machining tool based on the control numerical information (CNC) of the machine tool, and plots and maps the status of the machining tool at each coordinate using changes in color, etc. This makes it easy to understand where in the 3D coordinate system changes of the machining tool are occurring, which was previously difficult to understand at first glance as only changes in measured values ​​over a predetermined time. For example, in ball end mill machining as described above, if so-called "chatter" occurs, the acceleration of the machining tool increases, and the problem of reduced machining accuracy and tool breakage due to "chatter" becomes greater the more complex the shape being machined. However, using this device makes it advantageous to be able to identify at a glance where "chatter" is occurring on the machining path.

[0009] Furthermore, it is preferable that the mapping means converts the physical quantity data into a color specification value that is set in advance in correspondence with a predetermined numerical value of the physical quantity data, and displays the color specification value in the pixel corresponding to the coordinate data.

[0010] Specifically, the mapping method involves pre-setting color specification values ​​(RGB values) corresponding to predetermined measured values ​​of temperature, acceleration, and stress, and then displaying the color specification values ​​corresponding to the actual measured values ​​on pixels representing the 3D coordinates of the processing tool on the display screen.

[0011] Furthermore, as an example of this real-time processing status display device, the measurement means includes a thermocouple inserted into the processing tool and a temperature measurement unit that outputs information from the thermocouple as temperature data. The time-series coordinate data from the position acquisition means is three-dimensional XYZ coordinate data, and the mapping means displays temperature data in the XY plane, XZ plane, and YZ plane based on the coordinate data, or The measurement means includes an acceleration sensor disposed on a machine tool or a tool holder held by a machine tool, and an acceleration measurement unit that outputs information from the acceleration sensor as acceleration data. The time-series coordinate data from the position acquisition means is three-dimensional XYZ coordinate data, and the mapping means may display temperature data in the XY plane, XZ plane, and YZ plane based on the coordinate data.

[0012] As an example of actual display, it is preferable to display data obtained by inserting a thermocouple into the machining tool to measure temperature, or data obtained by measuring acceleration using an acceleration sensor installed on a tool holder that is connected to the spindle of the machine tool and grips the machining tool, in XY planar view, XZ planar view, and YZ planar view, so that all 3D position and temperature / acceleration measurements of the machining tool can be visualized on a single display screen.

[0013] Furthermore, the machine tool is a rotary tool that processes a workpiece by rotating the processing tool, and the acceleration sensor may consist of a pair of acceleration sensors arranged radially symmetrically with respect to the rotation axis center of the rotary tool on a horizontal plane within the tool holder, and a pair of acceleration sensors arranged at a position approximately 90° apart in phase from these.

[0014] This real-time machining status display device can detect acceleration in both the horizontal and rotational directions. For example, abnormal vibrations during cutting can be understood at a glance by observing their position and measured values ​​on the machining path. This allows for the visualization of the causes of significant decreases in machining accuracy, the so-called "chatter" that indicates impending tool breakage, and phenomena such as stick-slip during tapping. Furthermore, it can explore the optimal machining conditions for the rotational speed, feed rate, and depth of cut of the machining tool, enabling the simultaneous achievement and balance of the often conflicting goals of speeding up the machining process and ensuring safety (preventing tool breakage).

[0015] Furthermore, it is preferable that the mapping means displays temperature data or acceleration data in the XY plane in the XY plane display window, temperature data or acceleration data in the XZ plane in the XZ plane display window, temperature data or acceleration data in the YZ plane in the YZ plane display window, and displays pre-set color specification values ​​corresponding to the numerical values ​​of the respective temperature data or acceleration data in the color conversion table window.

[0016] This real-time processing status display device offers advantages because it can display temperature measurement data and acceleration measurement data on a single display screen in XY planar view, XZ planar view, and YZ planar view, while simultaneously visualizing whether the plotted colors represent the measured value or whether it is approaching its limit.

[0017] Furthermore, other real-time machining status display devices of the present invention include a measurement means that monitors in time series one or more physical quantity data of the machining tool, such as temperature, acceleration, or stress, and measurement data of the machine tool from a measurement means provided by the machine tool for measuring the operating state of the machine tool, and displays the time-series physical quantity data from the measurement means and the measurement data from the machine tool, or the changes in both data over time, on the same time axis.

[0018] According to this real-time processing status display device, in addition to the measurement data of the temperature, acceleration, and stress of the processing tool, the measurement data of the machine tool such as the servo motor, acceleration pickup, dynamometer, and displacement meter are displayed in real time on a time chart with the same time axis, thereby improving the accuracy of detecting processing abnormalities.

[0019] Furthermore, in another aspect of the present invention, there is provided a real-time processing status display device that displays the state changes on the processing path of the processing tool at the tip of the machine tool. This real-time processing status display device measures and stores data of one or more physical quantities such as the temperature, acceleration, or stress of the processing tool at a reference time point, and creates reference data by reading the time-series coordinates of the processing tool during operation from the time information and position information of the operation control means of the machine tool. A comparison data creation means that measures and stores the physical quantity data measured and stored by the reference data creation means at a time point after a predetermined time has elapsed from the reference time point, and creates comparison data by reading the time-series coordinates of the processing tool during operation from the time information and position information of the operation control means of the machine tool; a comparison calculation means that calculates the difference in the physical quantity data at the time-series coordinates of the processing tool read from the reference data creation means and the comparison data creation means; and a display means that displays the difference in the physical quantity data calculated by the comparison calculation means on the coordinates on the processing path based on the time-series coordinates of the processing tool.

[0020] According to this real-time processing status display device, it is possible to quantitatively evaluate the changes over time, deterioration, and abnormalities of the processing tool, machine tool, and their components, and to reduce the frequency of defective products, improve the machining dimensional accuracy, and improve the quality of the machined surface of the workpiece.

Effect of the Invention

[0021] According to the real-time processing status display device of the present invention, regarding the changes in physical quantities such as temperature and acceleration in the processing tool such as the tool of the machine tool, the three-dimensional coordinates of the processing position and the physical quantities such as temperature and acceleration are displayed simultaneously, and the situation occurring at the actual processing position is displayed in real time, so that even in complex shape machining, the abnormal detection location and its physical quantity can be visualized.

Brief Description of the Drawings

[0022] [Figure 1] It is a schematic diagram showing the relationship between acceleration and "vibration" in machining by a machine tool, the conventional measurement data, and an image of the data displayed by the real-time machining state display device of the present invention. [Figure 2] (a) is an image of the display result of the conventional formula of the acceleration of the machining tool that monitored the acceleration etc. of the machining tool in FIG. 1, and (b) is an image of the display result of the acceleration of the machining tool by this real-time machining state display device. [Figure 3] (a) shows an example screen in which the acceleration and temperature are measured and displayed in real time when actually machining a workpiece with a machining tool by this real-time machining state display device, and (b) shows a plan view photograph of an example of the workpiece being actually machined. [Figure 4] It shows a specific processing flow example 1 in this real-time machining state display device. [Figure 5] It shows a specific processing flow example 2 in this real-time machining state display device. [Figure 6] It shows a specific processing flow example 3 in this real-time machining state display device. [Figure 7] It shows a specific processing flow example 4 in this real-time machining state display device.

Embodiments for Carrying Out the Invention

[0023] A specific processing flow example of the configuration of the real-time machining state display device of the present invention described above will be described.

[0024] Figure 1 is a conceptual diagram illustrating the "chatter" that occurs during machining with a ball end mill, which is used in milling as an example of a machining tool. The ball end mill 1 has a spherical cutting edge at its tip and is mounted on the spindle of a machining center, which is a machining device. Figure 1 shows the state of the ball end mill 1 at each position (a) to (d) when the workpiece 2 being cut by the ball end mill 1 has vertical undulations. This real-time machining status display device can monitor the acceleration and temperature of the cutting edge at the tip of the ball end mill 1 in real time, but below we will explain the acceleration monitoring focusing on "chatter" detection.

[0025] In Figure 1(a), the tip (cutting edge) 1a of the ball end mill 1 is in contact with the high position 2a on the surface of the workpiece 2, and this position is assumed to be the starting position for machining. As the ball end mill 1 moves to the right relative to the workpiece 2 while cutting, the height of the workpiece 2 decreases, and at position (b), the tip 1a of the ball end mill is floating in the height direction above the low position 2b of the workpiece 2, and cutting is performed while the right side is pressed against the workpiece being cut. At this time, the acceleration of the ball end mill 1 increases, and a large "chatter" occurs as shown by the arrow in (b). Subsequently, the ball end mill 1 moves further to the right, and the height of the workpiece 2 increases. At position (c), when the tip 1a of the ball end mill is in contact with the surface of the high position 2c of the workpiece 2, the acceleration decreases and the "chatter" is eliminated. Furthermore, when the tip 1a of the ball end mill moves to the right and rises to a height slightly lower than position (b), the acceleration of the ball end mill 1 increases again to about the midpoint between the accelerations at positions (b) and (c), and a moderate amount of "chatter" occurs as shown by the arrow in (d).

[0026] Figure 2 shows examples of the conventional display results of acceleration monitored by the ball end mill 1 in Figure 1 and the display results of this real-time machining status display device. Figure 2(a) shows the conventional display results, with the time axis (time [s]) on the horizontal axis and the acceleration [m / s²] at each time on the vertical axis. In the example of Figure 2(a), for example, at position (b), the acceleration is the largest, similar to position 1(b), at position (c), the acceleration is small, similar to position 1(c), and at position (c), the acceleration is large again, similar to position 1(d). With this display method in Figure 2(a), there is a problem that it is difficult to grasp at a glance which position on the workpiece 2 corresponds to position (b), where the acceleration is large and "chatter" occurs, as it is not visualized.

[0027] On the other hand, Figure 2(b) shows an example of the display result in the real-time machining status display device of the present invention, with the horizontal axis representing the lateral position (position in the X direction [mm]) of the cutting edge 1a of the ball end mill 1, and the vertical axis representing the height position (position in the Z direction [mm]) of the cutting edge 1a of the ball end mill 1. Also, the look-up table shown in the upper right of Figure 2(b) is used. Table 4 displays the magnitude of acceleration using color, with the color changing gradually from the leftmost color (min.) to the rightmost color (max.) (although this figure is displayed in grayscale, it is actually displayed in color). Furthermore, acceleration display 3 in the figure shows the machining path (trajectory) of the cutting edge 1a of the ball end mill 1 in the XZ direction, and displays the acceleration at that position on the machining path using the color corresponding to the aforementioned lookup table 4. For example, at position (b) in Figure 2, the maximum acceleration is measured, similar to position (b) in Figure 1 and position (b) in Figure 2(a), and acceleration display 3 displays (plots) the color corresponding to that acceleration. Therefore, in the display of Figure 2(b), it is possible to visualize and understand in real time that "chatter" is occurring at the cutting edge 1a of the ball end mill 1 at position (b) of the workpiece 2. Note that in the example of Figure 2(b), the acceleration at the position in the XZ direction is visualized, but it is also possible to display the acceleration at the position in the XY direction or the YZ direction, or to display them simultaneously.

[0028] Next, in Figure 3, (a) shows an example screen displaying the acceleration and temperature in real time when the actual workpiece 2 is cut with the ball end mill 1 using this real-time machining status display device, and (b) shows a plan view photograph of an example of the workpiece 2 being cut. In this cutting example, as shown in Figure 2(b), the workpiece 2, which is a thick stainless steel plate, is cut into a concave star shape. In the example screen in Figure 3(a), the top row shows, from left to right, the translational acceleration in the X direction (ACC X) of the cutting edge 1a of the ball end mill 1, the rotational acceleration around the axis (ACC R), and the temperature (TEMP). The measured values ​​at this time of display are 4.780 (mm / S2), 447.609 (rθ / S2), and 6698.640 (C°), respectively. Furthermore, the middle section displays, from left to right, a top view showing translational acceleration, rotational acceleration, and temperature on the machining path with the vertical axis in the X direction and the horizontal axis in the Y direction; a front view showing translational acceleration, rotational acceleration, and temperature on the machining path with the vertical axis in the X direction and the horizontal axis in the Z direction; and a side view showing translational acceleration, rotational acceleration, and temperature on the machining path with the vertical axis in the Y direction and the horizontal axis in the Z direction. By switching tabs 5 (time Chart, ACC X, ACC-R, Temperature), the time chart (see Figure 2(a)), translational acceleration, rotational acceleration, and temperature are displayed. In addition, the bottom section shows a lookup table 4 (see lookup table 4 in Figure 2(b)) plotting the measured values ​​of acceleration and temperature on the machining path. In Figure 3(a), the acceleration is mapped and visualized as being particularly large at the contours and corners in the machining path of a star-shaped ball end mill, and it can be seen that chatter, and consequently a decrease in machining accuracy and signs of tool breakage, are clearly revealed in real time along with their locations.

[0029] Furthermore, although not shown in Figure 3, the time chart shown in Figure 2(a) is displayed as shown in the time Chart on the far right of tab 5, allowing for the display of translational acceleration, rotational acceleration, and temperature changes over time on the same time axis.

[0030] ≪Real-time display of changes in processing tools≫ Next, we will explain a specific example of the processing flow in this real-time processing status display device. Figure 4 shows an example of a processing flow 1, which monitors the changes in temperature, acceleration, and force of a machining tool 1 such as a ball end mill for each machining operation and displays the changes in the state of the cutting tool (cutting edge, etc.) 1a. When machining of the machine tool starts and processing of this real-time machining status display device begins (ST1), measuring means placed in the tool holder of the machine tool read the temperature, acceleration, and force (stress) of the cutting tool 1a in real time (ST2). Specifically, it reads temperature data detected from a thermocouple etc. installed inside the tip of the cutting tool 1a, acceleration data (translational acceleration and rotational acceleration) detected from an acceleration sensor placed in the tool holder etc., and stress data detected from a strain gauge etc.

[0031] When the temperature, acceleration, and stress data of the machining tool 2 are read (ST2), the initial state of the cutting tool 1a (at the start of machining) is detected, or the amount of change of the cutting tool 1a in the current state compared to the state of the previous machining stored in this real-time machining state display device is calculated (ST3). Although not shown in Figure 4, at this time, it is possible to determine whether the cutting tool 1a is suitable for machining based on the initial state of the cutting tool 1a and the amount of change since the previous machining (based on predetermined thresholds etc.), and if it is determined to be unsuitable, a warning or machining stop can be issued. When machining starts, the changes in temperature, acceleration, and stress of the cutting tool 1a during machining, which have been read, are displayed (ST4). Then, when the measurement of the amount of change is finished, the process ends (ST5~ST6).

[0032] <Simultaneous display of measurement data for machining tools and machine tools on the same time axis> Figure 5 shows an example of processing flow example 2, in which data from servo motors, acceleration pickups, dynamometers, and displacement meters are also collected synchronously and plotted together with the cutting tool temperature and holder acceleration and force. In addition to temperature, acceleration, and stress read in processing flow example 1, machine tools and their peripheral equipment may also be able to read other measurement data. For example, these include the servo motor for driving the machining tool 1, acceleration pickups (vibration pickups) which are sensors that detect vibrations and convert them into electrical signals, dynamometers which measure power such as rotational torque from the input and output data of the machine tool, and displacement meters which measure the amount of movement of the cutting tool 1a and spindle. By utilizing this measurement data as supplementary data, the accuracy of anomaly detection of the machining tool 1 can be improved.

[0033] Specifically, as in the example processing flow 1 above, when processing starts (ST1), the temperature, acceleration, and force (stress) of the cutting tool 1a are read in real time (ST2). When the temperature data, acceleration data, and stress data of the machining tool 2 are read (ST2), data from the servo motor, acceleration pickup, dynamometer, and displacement meter are also read (ST7). The changes over time of the read temperature, acceleration, and stress data, as well as the data from the servo motor, acceleration pickup, dynamometer, and displacement meter, are displayed in real time on the same time axis as a time chart (see tab 5 (time Chart) in Figure 2(b)) (ST8). Then, when the measurement of the amount of change is finished, the processing ends (ST5~ST6). This example processing flow 2 allows for the real-time display of measurement data from machine tools such as the servo motor, acceleration pickup, dynamometer, and displacement meter, in addition to the measurement data of the machining tool 2, on the same time axis as a time chart (see the leftmost tab 5 (time Chart) in Figures 2(a) and 3)), further improving the accuracy of detecting machining anomalies.

[0034] <<Visible real-time display of abnormal occurrences>> Figure 6 shows an example of a processing flow 3, which visualizes the temperature, acceleration, and stress of the cutting tool 1a of the machining tool 1 by mapping it. According to this processing flow 3, it is possible to visually communicate to operators such as junior skilled workers the parts where abnormalities such as overheating and chatter are likely to occur, as well as the locations where abnormalities have actually occurred.

[0035] Specifically, as in processing flow examples 1-2, when processing begins (ST1), the temperature, acceleration, and force (stress) of the cutting tool 1a are read in real time (ST2). The read temperature, acceleration, and stress data are converted into predetermined colors according to their respective values. Although omitted in Figure 6, it is preferable to display the colors set according to the temperature, acceleration, and stress values ​​using a lookup table 4 or the like, as shown in Figures 2-3. Next, communication is established with the NC program of the machine tool, and the current position coordinates (X, Y, Z coordinates) of the machining point on the machining tool 1 are read from its CNC variables (ST10). Furthermore, the colors set in ST9 for each measured value of temperature, acceleration, and stress are displayed (plotted) on pixels in the coordinate plane on the display corresponding to the position coordinates of the machining point read in ST10 (see windows 6, 7, and 8 in Figure 3), or on pixels (voxels) in the coordinate space (XYZ coordinate space) of the three-dimensional window, and are mapped in real time across the entire processing area (ST11). Then, once the measurement of the amount of change is complete, the process ends (ST5~ST6). This example of processing flow 3 reduces the frequency of defective products from the processing tool 1, improves the dimensional accuracy of the workpiece 2, improves the quality of the processed surface, increases work efficiency, allows for a quantitative understanding and acquisition of the intuition of skilled workers, and enables skilled workers to gain new insights.

[0036] Quantitative evaluation of changes, deterioration, and abnormalities in equipment and components over time. Figure 7 shows an example of a processing flow 4, in which, as a fixed-point observation of the state of a machine tool, an evaluation cutting tool 1a and tool holder are used to periodically acquire temperature, acceleration, force, and position information while machining along a preset trajectory (machining path), and the results are compared to quantitatively evaluate changes, deterioration, and abnormalities of the machine tool and parts over time. According to this processing flow 4, when machining the same product repeatedly, the machine tool and parts can be visually compared and evaluated with the previous machining state, which can lead to a reduction in the frequency of defective products, an improvement in dimensional accuracy, and an improvement in the quality of the machined surface.

[0037] Figure 7(a) shows an example of a processing flow for creating reference data by saving (including updating) temperature, acceleration, and stress on the machining path of a reference cutting tool 1a and a machine tool (and its tool holder). Figure 7(b) shows an example of a processing flow for visually comparing and displaying temperature, acceleration, stress, and coordinate data on individual machining paths of the same machine tool after a predetermined period of time with the reference data saved and created in (a).

[0038] Specifically, in Figure 7(a), when processing begins (ST1), similar to processing flow examples 1-3, the temperature, acceleration, and force (stress) of the cutting tool 1a are read in real time (ST2). The measured temperature, acceleration, and stress data are read, and the current position coordinates (XYZ coordinates) of the machining point are read from the machine tool's CNC (ST10). The measured temperature, acceleration, and stress data read from ST2 and ST10, along with the corresponding machining point position coordinate data, are saved, and reference data is created using the point of initialization, such as when the machining tool is changed or when the machine tool is started (ST12). This reference data is saved, for example, on a dedicated server or cloud server, and processing ends when the reference data is saved and measurement is completed (ST5-ST6). Furthermore, after the reference data is created, data is saved sequentially and periodically each time the processing in Figure 7(a) is performed, and this is saved as comparison data. It is also possible to set the previously saved comparison data as the reference data from the previous measurement, and the current data as the comparison data.

[0039] Next, in Figure 7(b), as in (a), when the process starts (ST1), the initial reference data saved and created in (a) is read and set (ST13). Similarly, the comparison data saved and created periodically is read and set (ST14). Next, the reference data set in ST13 to ST14 is compared with the comparison data, and the difference in temperature, acceleration, and stress at each coordinate position is calculated (ST15). Then, the calculated difference in temperature, acceleration, and stress at each coordinate position is displayed in pixels in the coordinate plane on the display corresponding to the position coordinate of the processing point, or in pixels in the coordinate space of the three-dimensional window, as shown in ST11 in Figure 6 (ST16), and the process ends when the display is finished (ST6). According to this processing flow example 4, it is possible to quantitatively evaluate the changes, deterioration, and abnormalities over time of processing tools, machine tools, and their parts, and it is possible to reduce the frequency of defective products, improve the accuracy of processing dimensions, and improve the quality of the processed surface of the workpiece. [Explanation of Symbols]

[0040] 1… Processing Tools 2...Workpiece 3…Acceleration display 4…Look-up table 5... Tabs 6-8...Window

Claims

1. A real-time machining status display device that maps the state of the machining tool at the tip of a machine tool along the machining path, A measurement means for monitoring at least the temperature and acceleration data of the processing tool in a time series, A position acquisition means that reads the time-series coordinates of a machining tool in operation from the time information and position information of the machine tool's motion control means (CNC), The system includes a mapping means that, based on time-series physical quantity data from the measurement means and time-series coordinate data from the position acquisition means, converts the physical quantity data at coordinates on the machining path into visualization data and displays it at a position on the machining path. The measurement means includes a thermocouple inserted into a processing tool, a temperature measurement unit that outputs information from the thermocouple as temperature data, and an acceleration sensor disposed in a tool holder gripped by a machine tool, and an acceleration measurement unit that outputs information from the acceleration sensor as acceleration data. The time-series coordinate data from the position acquisition means is three-dimensional XYZ coordinate data, and the mapping means displays temperature data and acceleration data in the XY plane, XZ plane, and YZ plane based on the coordinate data, in a real-time processing state display device.

2. The real-time machining state display device according to claim 1, wherein the measurement means monitors the stress of the machining tool in a time series as the physical quantity.

3. The real-time processing status display device according to claim 1 or 2, wherein the mapping means converts the physical quantity data into a color specification value set in advance corresponding to a predetermined numerical value of the physical quantity data, and displays the color specification value in a pixel corresponding to the coordinate data.

4. The machine tool is a rotary tool that processes a workpiece by rotating the processing tool, and the acceleration sensor comprises a pair of acceleration sensors arranged radially symmetrically with respect to the rotation axis center of the rotary tool on a horizontal plane within the tool holder, and a pair of acceleration sensors arranged at a position approximately 90° out of phase with respect to the same, as described in claim 1 or 2, real-time processing state display device.

5. The real-time processing status display device according to claim 1 or 2, wherein the mapping means displays temperature data or acceleration data in the XY plane in an XY plane display window, displays temperature data or acceleration data in the XZ plane in an XZ plane display window, displays temperature data or acceleration data in the YZ plane in a YZ plane display window, and displays preset color specification values ​​corresponding to the numerical values ​​of the respective temperature data or acceleration data in a color conversion table window.

6. A real-time machining state display device according to claim 1 or 2, which displays the time-series physical quantity data from the measurement means and the measurement data from the machine tool, or the change in both data over time, on the same time axis.

7. A reference data creation means that measures and stores the aforementioned physical quantity data and creates reference data by reading the time-series coordinates of the operating machining tool from the time information and position information of the operation control means of the machine tool, A comparison data creation means measures and stores physical quantity data measured and stored by the reference data creation means at a predetermined time after a reference point, and creates comparison data by reading the time-series coordinates of the operating machining tool from the time information and position information of the machine tool's motion control means, A comparison calculation means that calculates the difference in the time-series coordinates of the physical quantity data of the processing tool read from the reference data creation means and the comparison data creation means, A real-time machining state display device according to claim 1 or 2, further comprising: a display means that displays the difference in physical quantity data calculated by the comparison calculation means on the coordinates of the machining path based on the time-series coordinates of the machining tool.

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